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Go Log and Logger

In the computing paradigm, a log file is a file that records either events that occur in the operating system or other software runs or messages between the different users of communication software. Logging is an act of keeping a log. In the simplest case, messages are written to a single log file.

In Go, log exist in log package which defines a type Logger with methods and formatting output.

Example of Log and Logger in Go

package main

import (

func division(x float32, y float32) (float32, error) {
    if y == 0 {
        return 0, errors.New("can't divide by zero")

    return x / y, nil

func main() {

    var x float32 = 11
    var y float32

    res, err := division(x, y)

    if err != nil {



➜ hello go run hello.go
2019/11/28 18:50:19 can't divide by zero
➜ hello


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